The protein used in Keto Chow is milk protein isolate. If you have an issue with Lactose, you will most likely not have any issues at all. If, however, you are allergic to milk proteins (casein and whey) you would need to use the Base Powder version along with a suitable non-dairy protein. For the fat source refer to Are there alternatives to the Heavy Cream? What if I am lactose intolerant? Can Keto Chow be dairy-free?